(19)

(11)

EP 2 308 168 A1

(12)

(43) Date of publication: 13.04.2011 Bulletin 2011/15 (21) Application number: 08767182.2 (22) Date of filing: 16.06.2008

(51) International Patent Classification (IPC):  H03B 19/14(2006.01) (86) International application number: PCT/SE2008/050716 (87) International publication number: WO 2009/154521 (23.12.2009 Gazette 2009/52)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (71) Applicant: Telefonaktiebolaget L M Ericsson (PUBL) 164 83 Stockholm (SE)	(72) Inventor: BAO, Mingquan S-426 54 Västra Frölunda (SE) (74) Representative: Vejgaard, Christian  Ericsson AB Patent Unit Antennas and Microwaves Lindholmspiren 11 417 56 Göteborg 417 56 Göteborg (SE)